| 发明名称 |
artigo e artigo fotocrÈmico. |
| 摘要 |
<p>Described are articles having a polyanhydride photochromic coating. The coatings exhibit a Fischer microhardness of from 50 to 130 Newtons per mm2 and desirable photochromic properties, i.e., the formation of darker activated colors and faster rates of photochromic activation and fade when irradiated with ultraviolet light. Also described are polyanhydride photochromic articles.</p> |
| 申请公布号 |
BR9917068(B1) |
申请公布日期 |
2010.11.30 |
| 申请号 |
BR19999917068 |
申请日期 |
1999.12.10 |
| 申请人 |
|
发明人 |
CLETUS N. WELCH;ROBERT W. WALTERS;SHANTI SWARUP |
| 分类号 |
C09K9/02;G02C7/10;B05D7/24;B32B7/02;C08G81/00;C08J7/04;C09D5/00;C09D7/12;C09D125/08;C09D133/02;C09D133/06;C09D133/26;C09D135/00;C09D157/00;C09D161/28;C09D163/00;C09D167/00;C09D171/00;C09D175/04;C09D201/00;G02B1/04;G02B1/10;G02B5/23;G03C1/685;G03C1/73 |
主分类号 |
C09K9/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
